Key Control Factors and Common Issues in PE Pipe Welding
1. Temperature Control — The Core Factor
In PE pipeline construction, welding quality directly determines the sealing and long-term reliability of the system. Among all parameters, temperature control is the most critical. Different material grades (such as PE80 and PE100), wall thicknesses, and environmental conditions require specific heating temperature ranges. Only with accurate temperature management can materials fully melt and form a strong joint.
2. Common Problems in Butt Fusion Welding
The most frequent problem in butt fusion welding is cold welding, which appears as a small or uneven welding bead.
Main causes include:
1️⃣ Heating temperature too low.
2️⃣ Heating time too short.
3️⃣ Delay during the plate removal and joining process.
These factors lead to insufficient melting and weak bonding between pipe ends, reducing joint strength.
3. Common Problems in Electrofusion Welding
In electrofusion welding, common issues include incomplete fusion and misaligned heating wires.
Incomplete fusion often occurs when welding time is too short, power is too low, or the gap between pipe and fitting is excessive.
Misaligned wires are caused by overheating, overly tight fitting, or improper pipe insertion.
4. Ensuring Reliable Results
Accurate temperature and timing control — together with proper matching between pipes and fittings — are essential for long-term reliability.
Welping’s butt fusion and electrofusion machines are built to meet international standards, providing consistent, repeatable, and reliable welding performance for every project.
A real customer story from Brazil — nighttime pipeline welding work carried out by a professional construction team, with Welping butt fusion machines running smoothly, demonstrating teamwork and reliable performance.
